Nuclear spin relaxation/resonance of 8Li in Al
| Autor: | T. A. Keeler, R. F. Kiefl, Q. Song, Gerald D. Morris, Kim H. Chow, W. A. MacFarlane, D. Wang, Z. Salman, A. I. Mansour, M. D. Hossain, T. J. Parolin, M. R. Pearson, Isaac Fan, H. Saadaoui, M. Smadella, C. D. P. Levy |
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| Rok vydání: | 2009 |
| Předmět: |
Materials science
Magnetic moment Condensed matter physics Relaxation (NMR) Resonance Knight shift Condensed Matter Physics Electronic Optical and Magnetic Materials Magnetic field Dipole Condensed Matter::Strongly Correlated Electrons Electrical and Electronic Engineering Spin (physics) Magnetic dipole |
| Zdroj: | Physica B: Condensed Matter. 404:920-923 |
| ISSN: | 0921-4526 |
| Popis: | A low energy beam of spin polarized 8Li has been used to study the behaviour of isolated 8Li implanted into a 150 nm thick film of Al on an MgO substrate. The spin relaxation rate 1 / T 1 and β -NMR lineshape were measured as a function of temperature in a large magnetic field of 4.1 T. The resonances from different sites are unresolved due to the large nuclear dipolar interaction with the host 27Al magnetic dipole moments. Nevertheless the temperature variation of the site averaged 1 / T 1 and Knight shift show evidence for a transition between the octahedral O and substitutional S sites at about 150 K, as observed in other fcc metals. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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